package com.ctrip.framework.apollo.biz.service;

import com.ctrip.framework.apollo.biz.entity.AccessKey;
import com.ctrip.framework.apollo.biz.entity.Audit;
import com.ctrip.framework.apollo.biz.repository.AccessKeyRepository;
import com.ctrip.framework.apollo.common.exception.BadRequestException;

import java.util.List;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

/**
 * @author nisiyong
 */
@Service
public class AccessKeyService {

    private static final int ACCESSKEY_COUNT_LIMIT = 5;

    private final AccessKeyRepository accessKeyRepository;
    private final AuditService auditService;

    public AccessKeyService(AccessKeyRepository accessKeyRepository, AuditService auditService) {
        this.accessKeyRepository = accessKeyRepository;
        this.auditService = auditService;
    }

    public List<AccessKey> findByAppId(String appId) {
        return accessKeyRepository.findByAppId(appId);
    }

    @Transactional
    public AccessKey create(String appId, AccessKey entity) {
        long count = accessKeyRepository.countByAppId(appId);
        if (count >= ACCESSKEY_COUNT_LIMIT) {
            throw new BadRequestException("AccessKeys count limit exceeded");
        }

        entity.setId(0L);
        entity.setAppId(appId);
        entity.setDataChangeLastModifiedBy(entity.getDataChangeCreatedBy());
        AccessKey accessKey = accessKeyRepository.save(entity);

        auditService.audit(AccessKey.class.getSimpleName(), accessKey.getId(), Audit.OP.INSERT, accessKey.getDataChangeCreatedBy());
        return accessKey;
    }

    @Transactional
    public AccessKey update(String appId, AccessKey entity) {
        long id = entity.getId();
        String operator = entity.getDataChangeLastModifiedBy();

        AccessKey accessKey = accessKeyRepository.findOneByAppIdAndId(appId, id);
        if (accessKey == null) {
            throw new BadRequestException("AccessKey not exist");
        }

        accessKey.setEnabled(entity.isEnabled());
        accessKey.setDataChangeLastModifiedBy(operator);
        accessKeyRepository.save(accessKey);

        auditService.audit(AccessKey.class.getSimpleName(), id, Audit.OP.UPDATE, operator);
        return accessKey;
    }

    @Transactional
    public void delete(String appId, long id, String operator) {
        AccessKey accessKey = accessKeyRepository.findOneByAppIdAndId(appId, id);
        if (accessKey == null) {
            throw new BadRequestException("AccessKey not exist");
        }

        if (accessKey.isEnabled()) {
            throw new BadRequestException("AccessKey should disable first");
        }

        accessKey.setDeleted(Boolean.TRUE);
        accessKey.setDataChangeLastModifiedBy(operator);
        accessKeyRepository.save(accessKey);

        auditService.audit(AccessKey.class.getSimpleName(), id, Audit.OP.DELETE, operator);
    }
}
